isr.c

凌阳061a单片机的中断使用例程。包括外部中断例子

#include"spce061a.h"
unsigned int g_uiOutput=0;
void IRQ3(void)__attribute__((ISR));
void IRQ3(void)
{
	unsigned int uiDelay;
	if(*P_INT_Ctrl&C_IRQ3_EXT1)
	{
		*P_IOA_Data=(g_uiOutput^=0xffff);
		*P_INT_Clear=C_IRQ3_EXT1;
		uiDelay=0x7fff;
		    while(uiDelay--);
		    *P_INT_Clear=0x0080;
	}
	else if(*P_INT_Ctrl&C_IRQ3_EXT2)
	{
		*P_INT_Clear=C_IRQ3_EXT2;
	}
	else 
	{
	*P_INT_Clear=C_IRQ3_KEY;
	}
}